Air conditioner problem

I have a 1996 Olds Aurora and recently (since I moved to Phoenix,AZ) my air conditioner quit working. I put 24 fl.oz of R-134 in and it ran cool for 2 days and then it quit again, so I went to put another can in tonight and the gauge on the hose said that there was 130lbs. of freon and to not add any more. I need info on what might be wrong. The compressor is still working although it is making a little noise when it runs.

If the compressor is making unusual noises do not run it. Your AC system may not have the proper amount of oil in it and that can cause the compressor to die on you, which as mentioned is not cheap.

Also, if you had freon in the system you shouldn't have mixed R-134 into it, as the freon should have been evacuated along with the oil that was in the system.

It does sound like you have a leak, although it is strange that your gauges are still reading pressure. If you do still have refrigerant in the system and it is not cooling, check your TXV valve, or orifice tube, depending on what your car uses. This part feeds refrigerant into the evaporator and allows it to expand and become cool.

Also, to check for a leak, go to your local auto parts store and they should have leak detection kits, which usually involve a dye. They also have leak detection tools, but they are generally a bit expensive and won't really be worth you buying just for one time use.

For now though i would say do not run your compressor, completely evacuate the system, and put the specified amount of refrigerant into the system, along with the leak detection dye. Also be sure to add the specified refrigerant oil as well, as that lubricates the compressor. Then just keep checking for leaks and see if the AC stays cool.